Синтез альфа-PVP (масштаб 1-10 кг). Полное видеоруководство.

Ukspice

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@William Dampier

Нужна помощь с измерениями

Вместо того, чтобы использовать :Валерофенон
Я куплю жидкость: 2-Бромовалерофенон

Если я хочу использовать 1 литр

2-Бромовалерофенона


Какое количество реагентов мне понадобится на 1 литр:


-гидробромовая кислота (HBr) 48%;?

-Перекись водорода (H2O2) 35%;?

-Пирролидин (CAS 123-75-1);???

-Этилацетат;???

-Карбонат натрия (Na2CO3) 20% aq раствор;???

-Диэтиловый эфир (Et2O) ????

-EtOH 50 ???

-Дибензоил-D-тартаровая кислота ??

-Дихлорметан (CH2Cl2) 830 мл;

-Гексан ????

Соляная кислота конц. 35% (HCl);...?

ОЧЕНЬ ПОМОГЛО БЫ, ЕСЛИ БЫ ВЫ МОГЛИ ДАТЬ МНЕ ИЗМЕРЕНИЯ ДЛЯ ИСПОЛЬЗОВАНИЯ 1 ЛИТРА 2-БРОМ. PLEASE?????

Чтобы я мог рассчитать стоимость одной реакции, а также оценить выход с потерей около 20%.
1 литр = 800 г a-pvp?
 

SpaceRocket

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hello, I have a question, I have all the steps. followed the process and have a nice a-pvp with a result of 80%. I do it on a larger scale between 1 and 0.5 kg bromo, but now I wonder how I can get large, beautiful crystals because if I try to recrystallize in water it grows. back like little needles. You can see on the picturen powder what i have made and the cristals sombody els but he dont want to tel me how he did it if sombody can help me wild be great!!!
 

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G.Patton

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Hi, how do u recrystallize it?
 

SpaceRocket

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I am loking for method how to cristalize , when i want to cristalize i get nedel cristal like this on the photo
 

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RegulierTier

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Can I replace the ethylacetate with toluene or TBME?
I don't have a rotovap so destill under vacuum would be a problem...
 

SpaceRocket

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I did it with 2 infrared lamps and had to evaporate 16.9 ethiel acetate in plastic containers, which took me 30 hours and i dry my powder also with the lamps that go very fast in view hours your powder is dry
 

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